Perhaps you should try some spelling variations:
thay nuoc » tham nuoc, thoat nuoc, nha nuoc
tray nuoc » tran quoc, tham nuoc
lang van » dang van, tang van, hoang van
te sach » toc sach
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu va » lieu va
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang van hoi. ((hieu va) or (hieu qua)) ((thay nuoc) OR (tray nuoc)) va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang van hoi. ((hieu va) OR (hieu qua)) ((thay nuoc) OR (tray nuoc)) va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang van hoi. ((hieu va) or (hieu qua)) ((thay nuoc) OR (tray nuoc)) va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang van hoi. ((hieu va) or (hieu qua)) ((thay nuoc) OR (tray nuoc)) va hanh vi cua tre*.